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arXiv · 1208.5278

Low dimensional cohomology of Hom-Lie algebras and q-deformed W(2,2) algebra

Lamei Yuan·Hong You
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Abstract

This paper aims to study the low dimensional cohomology of Hom-Lie algebras and q-deformed W(2,2) algebra. We show that the q-deformed W(2,2) algebra is a Hom-Lie algebra. Also, we establish a one-to-one correspondence between the equivalence classes of one dimensional central extensions of a Hom-Lie algebra and its second cohomology group, leading us to determine the second cohomology group of the q-deformed W(2,2) algebra. In addition, we generalize some results of derivations of finitely generated Lie algebras with values in graded modules to Hom-Lie algebras. As application we compute all $\a^k$-derivations and in particular the first cohomology group of the q-deformed W(2,2) algebra.

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BibTeXRIS

Lamei Yuan, Hong You. 2012-08-27. Low dimensional cohomology of Hom-Lie algebras and q-deformed W(2,2) algebra. https://arxiv.org/abs/1208.5278

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